* Based on NSOperation to make queuing requests and background operation easy

* The included ASIDownloadCache class lets requests transparently cache responses, and allow requests for cached data to succeed even when there is no network available

* [NEW] ASIWebPageRequest - download complete webpages, including external resources like images and stylesheets. Pages of any size can be indefinitely cached, and displayed in a UIWebview / WebView even when you have no network connection.

* Easy to use support for Amazon S3 - no need to fiddle around signing requests yourself!